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" IMPROVED SOLE-UUTIIIIG MACHINE.

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To ALL WHCM 1T MAY CCNCERN:

Be it known vthat I, TIMOTHY A. CURTIS, of Brookcld, in Worcester county, Sta-tc of Massachusetts, have invented a. new and useful IinprovedMSole-Cutting Machine; i and I do hereby declare the following description and accompanying drawings aresui'cient to enable any person skilled in the art or science to which it niost nearly appertains to make and use my said'invcntion or improvements without further invention or experiment. In the present system of manufacturing bootsfand shoes, the ailvaintages of shifting the knife usedin cutting the soles, so as to cut them ftoe and heel alternately, are too obvious to need a particular description; and to do this with fzi-cility and enablethe operator to tend the machine in rapid operation are the objects of my improvements. To'these ends their nature consists in securing the knife to a movable holder, turning on a support and having lsuitable means to swing it half round between each cut, and placing it in a frame, to which, also, is attached a lifting-bed, operated by levers or other suitable menus, to 'force it against the knife. In the accompanying drawingsl A )Figure-1 is a side View of my improved sole-cutter. t

Figure 2'shows a` section oi` the knifediolder and its support on a planeparallel to fig. l. Figure 3 shows some variations hereinafter to be described.

The same letters indicate the samevparts in each. v A A is the frame; B the knife-hol der, supported by the plate C and operated by the catchuing D, which hns teeth meshing in the rack ELF is a connecting-rodfrom the rack E to the lever G; a. stopcatch-pin to hold -B in position during the cut; I is the cutting-block, held in the adjusting-box/Jfforming part of thc table K, which is supported on ,the standard L with its elevating screw M and nut N, and is raised by means of the levers O P, the latter forming a. treadle and having an extension, P', towhicli is nttachedl the weight Q to give force to the stroke.n B. is a spring to assist inraising thctrcadle. The lever G turns on a stud at S, and has an arm and,connection, T, to P', by which it is operated. V V are adjusting screws to set the block I to the edge ot' the knife. v

In operation the leather is placed on the block I, 'and the workman trending on the lever P forcesup the block against the knife in the' holder B, which hns a., bearing at each end at :l: '96', on the frame A A, to give it solidity. The lever P being thrown forward carries the weight Q,rwhosemomentnm givcssuiicient force or blow to the stroke; the connection T, lever and connection F, give motion tothe rack E, `which, turns the ring D halt` round, and a projection from the rack hitting the lever U at theV last part of its motion raises the stoppin H, so that on'the return of the treadle to position the 'ring D, by a catch o n its under surface, catching on a notch on B, carries it with it halfrounthend the pin H, drooping into a. place made for it, retains it until again released by the next cut.

I amlaware that the swinging the knife halt` round between cach cut is an old device, and also that'knivcs have been attached to reciprocating shafts in various positions. Mine, it will be seen, differs from all these in turning on an internal support 4and in receiving the stroke on solid bearings at each end of the knife-holder, and raising the workup to thev knife. V Y

It is evident that forthe various kinds of soles used sonic variations muy be desirablc; one is chown at fig. 3'as suitablefor some kinds, and other variations of construction will readily suggest themselves in apply- `ing my invention to the'various circumstances' attending'the kinclof Vwork desired to do, as I do not claim the precise form or construction.

But what I claim' als new, and desire to secure by Letters Patent, is-

1. I claim supporting the knife-holder B ou nn internal support, iu connection with the solid bearings of the holder on the frame at x x, when the knife is swung half round between each cut by means of `the levers, rack, and catch-ringer their equivalents, substantially as set forth. i

2. I claim raising the block and table, in connection with the swinging-knife, in the Ina-nner and foi' the purposes substantially as above described. i

i TIMOTHY. A. CURTIS.

Witncses:

.-J. G, ARNOLD,

L. A. G. `ARNQLD. 

